Dexron VI Trans Fluid (Comparability)
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Beginning Member
Joined: Jun 2011
Posts: 11
Dexron VI Trans Fluid (Comparability)
DEXRON®-III Automatic Transmission Fluid. Look for “Approved for the H-Specification” on the label.
My question is it ok to mix old dexron III Fluid with the newer Dexron vI Fluid because I am in need of trans filter and fluid service (Approx 5qts of new fluid) an want to be sure this would not cause a issue with my Trans, since I have absolutely no issues with it and do not want to create any issues. (2005 Blazer LS rear wheel drive 4.3 Auto Trans)
. Thanks in Advance Ken
My question is it ok to mix old dexron III Fluid with the newer Dexron vI Fluid because I am in need of trans filter and fluid service (Approx 5qts of new fluid) an want to be sure this would not cause a issue with my Trans, since I have absolutely no issues with it and do not want to create any issues. (2005 Blazer LS rear wheel drive 4.3 Auto Trans)
. Thanks in Advance Ken
Junior Member
Joined: Oct 2008
Posts: 325
From: Pasco,WA
I would think if they were not compatible then the manufacturer would not recommend it as a substitute. I've mixed both in the past when I wanted to use what I had left from a previous purchase. Never noticed any difference what so ever in shifting operation.
Last edited by G0LFADD1CT; Nov 3, 2018 at 12:05 PM.
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Joined: Oct 2014
Posts: 4,339
From: North Central Indiana
DEXRON®-III Automatic Transmission Fluid. Look for “Approved for the H-Specification” on the label.
My question is it ok to mix old dexron III Fluid with the newer Dexron vI Fluid because I am in need of trans filter and fluid service (Approx 5qts of new fluid) an want to be sure this would not cause a issue with my Trans, since I have absolutely no issues with it and do not want to create any issues. (2005 Blazer LS rear wheel drive 4.3 Auto Trans)
. Thanks in Advance Ken
My question is it ok to mix old dexron III Fluid with the newer Dexron vI Fluid because I am in need of trans filter and fluid service (Approx 5qts of new fluid) an want to be sure this would not cause a issue with my Trans, since I have absolutely no issues with it and do not want to create any issues. (2005 Blazer LS rear wheel drive 4.3 Auto Trans)
. Thanks in Advance Ken
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